gce = { pkgs, resources, lib, ...}:  {
      environment.systemPackages = [ pkgs.google-cloud-sdk ];
      deployment.targetEnv = "gce";
      deployment.gce = credentials // {
        region = "europe-west1-b";
        instanceType = "n1-standard-4";
        network = resources.gceNetworks.lb-net;
        instanceServiceAccount = { 
          email = "gce-test-1@...iam.gserviceaccount.com";
          scopes = [ "https://www.googleapis.com/auth/monitoring.write" "https://www.googleapis.com/auth/devstorage.read_only" ];
        };  
      };  
    };